2011 Kenworth T660 Recalls, Complaints & Specs
13 safety recalls list the 2011 Kenworth T660, and owners have filed 1 complaint with NHTSA. Check your own VIN below.
13 safety recalls for the 2011 Kenworth T660
Most recent first. Recall repairs are free at any authorised dealer. Click a recall for the full defect, consequence and remedy text.
-
Reservoir/tank (service brakes)
PACCAR Incorporated (PACCAR) is recalling certain 2009-2021 Kenworth C500, 2012-2021 Kenworth T440, 2009-2015 Kenworth T660, 2015-2024 Kenworth T680, 2009-2024 Kenworth T800, 2009-2020 Kenworth T370, 2014-2023 Kenworth T880, 2011-2016 Kenworth T470, 2023 Kenworth T480, and 2009-2019 Kenworth W900 vehicles. The air tanks have an…
Remedy: Dealers will install the correct volume air tanks, free of charge. Owner notification letters were mailed August 12, 2024. Additional owner notification letters were mailed October 27, 2025. Owners may contact PACCAR…
-
Electronic stability control (esc) and abs warning light (service brakes)
PACCAR Incorporated (PACCAR) is recalling certain 2008-2019 Peterbilt 330, 335, 337, 340, 348, 365, 367, 384, 386, 387, 388, 389, 567, 579 and 587 vehicles and 2008-2020 Kenworth T170, T270, T370, T660, T680, T800, T880, and W900 vehicles equipped with NAMUX Software. In the event that the Anti-lock Brake System (ABS) loses battery…
Remedy: PACCAR will notify owners, and dealers will update the NAMUX software within the cab control module, free of charge. PACCAR issued owners an interim notification on June 4, 2020. The recall began May 26, 2020. Owners…
-
Hazard flashing warning lights (exterior lighting) and headlights (exterior lighting)
PACCAR Incorporated (PACCAR) is recalling certain model year 2011-2016 Kenworth T440, T470, T660, T680, and T880 trucks manufactured January 14, 2010, to May 22, 2015, and equipped with HID Headlamps and the option for Daytime Running Lamps (DRL). The DRLs are required to deactivate when the hazard warning lights are activated, however,…
Remedy: Kenworth will notify owners, and dealers will update the cab controller software, free of charge. The recall began on September 167, 2015. Owners may contact Kenworth customer service at 1-425-828-5000. Kenworth's…
-
Motor (visibility)
PACCAR Incorporated (PACCAR) is recalling certain model year 2011-2016 Kenworth T270, T370, T440, T470, C500, C540, C550, T660, T800, W900, and 963 trucks manufactured November 1, 2010, to April 6, 2015. In the affected trucks, water may leak into the wiper motor.
Remedy: PACCAR is still developing and testing a remedy. The recall is expected to begin in July 2015. An interim letter was sent to owners on July 2, 2015. The recall began on September 2, 1015. Owners may contact Kenworth…
-
Software (electrical system)
Paccar is recalling certain model year 2011-2012 kenworth t660, t700, and t800 vehicles manufactured from april 19, 2010, through may 13, 2011, and model year 2008, 2010, and 2011 peterbilt 365, 367, 384, 386, 387, 388 and 587 vehicles manufactured from april 20, 2010, through june 11, 2011, and equipped with paccar mx engines and eaton…
Remedy: Kenworth and peterbilt dealers will update the engine software for the affected chassis. This service will be performed free of charge. The safety recall began on august 22, 2011. Owners may contact kenworth at…
-
Engine and engine cooling
Paccar is recalling certain model year 2007-2011 kenworth c500, t2000, t600, and t660, as well as model year 2009-2011 peterbilt 387 and 388 trucks equipped with caterpillar c15 engine and manufactured from may 11, 2006, through september 17, 2010. Degradation of a combustion tube weld can cause radial heat impingement on the body which…
Remedy: Caterpillar is handling the owner notification and remedy for this campaign. Please see caterpillar's defect report 11e-006. Caterpillar will replace the single piece combustion tube with a thick wall combustion tube…
-
Slack adjusters (service brakes)
Paccar is recalling certain model year 2011-2012 kenworth t270/370, t440/t470, t800, t660, w900 and c500 vehicles manufactured between october 18, 2010, and january 28, 2011. Certain cast iron slack adjuster housings, which transmit braking force from the brake chamber push rod to the brake cam tube, may include a flow notch in the…
Remedy: Dealers will inspect and replace the slack adjuster housing as necessary. This service will be performed free of charge. The safety recall began on march 30, 2011. Owners may contact kenworth at 425-828-5440.
-
Tank assembly (fuel system)
Paccar is recalling certain model year 2008-2012 kenworth t2000, t660, t700, t800, and w900, as well as model year 2009-2012 peterbilt 365, 367, 384, 386, 387, 388, 389, and 587 trucks equipped with paccar mx engines. The oil module centrifugal spinner filter cap in the paccar mx engine may become loose, possibly allowing the cap to…
Remedy: Dealers will re-torque the oil module filter cap and install a secondary retention device on the secondary centrifugal spinner filter cap. This service will be performed free of charge. The safety recall is expected to…
-
Latch (latches/locks/linkages)
Kenworth is recalling certain model year 2011 t660 and t700 tractor trailers manufactured between august 9, 2010, and november 4, 2010. The safety latch feature that keeps the hood of the vehicle from closing after a user opens the hood may fail to operate.
Remedy: Dealers will replace the dual magnets with a single magnet on the safety latch. This service will be performed free of charge. The safety recall began on february 28, 2011. Owners may contact kenworth at 1-425-828-5440.
-
Labels (equipment)
Paccar is recalling certain model year kenworth t660 and t800 vehicles manufactured from september 13, 2010, through november 19, 2010, for failing to comply with the requirements of federal motor vehicle safety standard no. Part 567, "certification." the steer axle gawr and gvwr recorded on the vehicle's door labels may be inaccurate…
Remedy: Dealers will inspect and replace the door labels free of charge. The safety recall began on december 17, 2010. Owners may contact kenworth at 425-828-5440.
-
Caliper (service brakes)
Paccar is recalling certain model year kenworth t660, t700, t800 and w900 vehicles manufactured from december 22, 2008, through august 2, 2010, and equipped with ag400l air disc brakes. The air disc brake caliper could be installed on the wrong side of the drive axle potentially causing interference with the suspension bracket and the…
Remedy: Dealers will verify the correct orientation of the brake caliper and perform the necessary repair free of charge. The safety recall began on november 24, 2010. Owners may contact kenworth at 425-828-5440.
-
Gas recirculation valve (egr valve) (engine and engine cooling)
Paccar is recalling certain model year kenworth and peterbilt vehicles. A manufacturing defect in the seal supplied by a component manufacturer installed on the output shaft of the exhaust gas recirculation (egr) valve actuator may cause eventual delamination of the seal. Delamination of the seal may allow engine oil to leak from the…
Remedy: Dealers will replace the egr valve assembly on the subject vehicles equipped with the paccar mx engine. This service will be performed free of charge. The safety recall began on october 29, 2010. Owners may contact…
-
Exterior lighting
Kenworth is recalling certain model year 2011 t660, t800, w900, c500, t440, and t470 vehicles manufactured from april 1, 2009, through august 30, 2010. One of the four harness spade terminal connections to the chassis load center may become completely unseated. A completely unseated connection may result in a power loss to a portion of…
Remedy: Dealers will inspect the harness and re-seating the female connectors on the male spade terminals. This service will be performed free of charge. The safety recall began on october 29, 2010. Owners may contact kenworth…
1 owner complaint filed with NHTSA
Owners of the 2011 Kenworth T660 have filed 1 complaint with NHTSA. The average mileage at failure in those reports is 373,000 miles. Complaints peaked in 2013 with 1 filed that year.
Most-reported components
What owners are reporting
“During pre-trip inspection, service brake check failed, took to long to build up air pressure, ultimately, the system would not register any air pressure by gauge or physically.[xxxx], [xxxx] *js info”
Owner complaint to NHTSA, September 24, 2013 · Service brakes
Compare Kenworth T660 model years
Recall and complaint counts for every Kenworth T660 model year in NHTSA's database.
Checking a specific 2011 Kenworth T660
How do I know if my 2011 Kenworth T660 has an open recall?
Enter your 17-character VIN above. The VIN is on the driver's side dashboard (visible through the windshield), the driver's door jamb sticker, and your registration or insurance card. The check runs against NHTSA's live database and tells you which campaigns list your vehicle. 13 campaigns currently list the 2011 Kenworth T660; your car may already have been repaired under some of them.
Is the recall repair free?
Yes. Under federal law, manufacturers must fix safety recalls at no charge for vehicles up to 15 years old from the date of sale to the first owner. Contact any authorised Kenworth dealer with your VIN and the NHTSA campaign number (for example 10V452000).
What is the difference between a recall and a complaint?
A recall is a safety campaign filed by the manufacturer or ordered by NHTSA, with a defined defect and remedy. A complaint is a report an owner sent to NHTSA; it is not verified, but patterns of complaints are what trigger NHTSA investigations and, eventually, recalls.
Other Kenworth models
- T68077 complaints
- T200038 complaints
- T80033 complaints
- W90032 complaints
- Kenworth23 complaints
- T60016 complaints
- Conventional10 complaints
- T88010 complaints
Source: NHTSA recall and complaint databases and EPA fuel economy data, October 2026. Complaint counts are owner reports to NHTSA, not verified defects. Recall counts are safety campaigns that list this model year; whether a particular car was already repaired depends on its VIN. How this data is compiled.